JP6522109B2 - Data receiving method, transmitting method and apparatus in D2D communication - Google Patents

Description

  The present invention relates to the field of communication technology, and more particularly to a data receiving method, transmission method and device in D2D (Device to Device) communication.

This application claims the priority of Chinese Patent Application 201410386994.5 filed on August 7, 2014 with the Chinese Patent Office, the entire content of which is incorporated herein by reference.
FIG. 1 shows the flow of data communication between the two terminals in the traditional cellular communication technology. The two terminals perform interaction such as voice and data via a base station (usually a base station or an evolved base station) and a core network that are stationed respectively.

  D2D communication, that is, the direct communication technology of a terminal, as shown in FIG. 2, is a scheme in which a neighboring terminal (UE) can perform data transmission by a direct connection link within a short distance range, Not require transfer by the D2D communication has the following advantages. The direct communication scheme in the near field of the terminal increases the data rate, reduces the delay and reduces the power consumption. In addition, it is possible to make effective use of spectrum resources by utilizing the short-range features of communication terminals and D2D communication links widely distributed in the network. Also, the D2D direct communication scheme can adapt to local data sharing requests such as wireless P2P, for example, and can provide a flexible adaptive data service. In addition, D2D direct communication can use a large number of communication terminals widely distributed in the network to expand the coverage of the network.

  There are four application scenarios of D2D mainly shown in FIG. 3a, FIG. 3b, FIG. 3c and FIG. 3d, and a combination of each scenario is possible. UE1 and UE2 in D2D communication may be located in the network, may be located outside the network, and may be mutually a transmitting side and a receiving side. In the scenario shown in FIG. 3a, both UE1 and UE2 are located outside the network. In the scenario shown in FIG. 3b, UE1 is located in the network while UE2 is located outside the network. In the scenario shown in FIG. 3 c, UE1 and UE2 are located within the coverage of the same base station. In the scenario shown in FIG. 3 d, UE1 and UE2 are located within the coverage of different base stations.

  In D2D communication, in addition to a one-to-one communication method between users, D2D group or broadcast communication is included as a typical application scenario, and the scenario is used for fire fighting, emergency and terrorism measures among public safety applications. .

  In the prior art, UEs within the coverage of the network transmit and receive data according to resource pool allocation information arranged in the network, while UEs outside the coverage of the network transmit data according to predefined resource pool allocation information. Send and receive. In D2D communication in a scenario in which part of the UE is located within the coverage of the network or in a scenario in which the UE is located within the coverage of a different cell, the resource pool configuration information of the opposite UE is unknown to the UE. Data reception from the partner UE has not yet found a solution.

  The embodiment of the present invention provides a data reception method, transmission method and apparatus in D2D communication, and the UE receives data from the opposite UE in a situation where the resource pool allocation information of the opposite UE is unconfirmed Provide a solution for

  The embodiments of the present invention specifically provide the following technical solutions.

  An embodiment of the present invention provides, as a first aspect, a data reception method in D2D communication. In the method, the control information transmitted from the transmitting side is detected using each resource pool allocation information stored locally, and the control information detected the resource pool allocation information used on the transmitting side. And determining the data information of the transmission side based on the determined resource pool allocation information and the control information.

  Further, to determine the resource pool layout information used on the transmission side based on the detected control information acquires ID information attached to designated bits of the control information, and a resource pool corresponding to the ID information The arrangement information is determined as resource pool arrangement information used on the transmission side, or ID information attached to a demodulation reference signal (DMRS) sequence used for transmission of the control information is acquired to correspond to the ID information Resource pool allocation information to be used as the resource pool allocation information to be used on the transmission side, or acquiring the position of the transmission resource of the control information, and correlating the predetermined transmission resource position with the resource pool allocation information Resource pool allocation information corresponding to the location of the transmission resource based on the resource used on the transmitting side. Preferably includes ascertaining a spool arrangement information.

  When the resource pool arrangement information is derived from a user equipment (UE) within the coverage of a cell or network, the ID information is an ID associated with a cell ID, while the resource pool arrangement information is out of the coverage of the network. Preferably, the ID information has a predetermined value.

  The resource pool allocation information stored locally is classified according to the origin, and is of resource pool allocation information allocated from the base station, resource pool allocation information instructed from the base station, and resource pool allocation information instructed from other UEs. It is preferred to include any one or more of them.

  The resource pool allocation information preferably includes time frequency resource indication information and / or frequency hopping indication information and / or cyclic prefix (CP) length indication information.

  The resource pool arrangement information includes control resource pool arrangement information for control information and data resource pool arrangement information for data information, and the frequency hopping instruction information is frequency hopping for control information transmission in the control resource pool arrangement information. Time frequency resource indication information for control information transmission in the control resource pool arrangement information, the time frequency resource indication information including instruction information and frequency hopping indication information for data information transmission in the data resource pool arrangement information; The CP resource indication information includes data on time frequency resource indication information for data information transmission in the data resource pool arrangement information, and CP length indication information on CP resource indication information for control information transmission in the control resource pool arrangement information; Information Preferably includes a CP length instruction information that data information for transmission.

  The second aspect of the present invention provides a data transmission method in D2D communication. In the method, determining one resource pool arrangement information from at least one resource pool arrangement information, generating control information based on the determined resource pool arrangement information, and determining the determined resource pool arrangement information Transmitting the control information and transmitting data information in accordance with an instruction of the control information.

  The at least one resource pool allocation information is classified according to the origin, and is among resource pool allocation information allocated in advance, resource pool allocation information instructed from a base station, and resource pool allocation information instructed from another UE. It is preferred to include any one or more.

  Determining one resource pool arrangement information from at least one resource pool arrangement information means that, when the user equipment (UE) is located outside the coverage of the network, the resource pool arrangement information arranged in advance is used as the resource pool arrangement information. Although determined, if the user equipment (UE) is located within the coverage of the network, the resource pool allocation information instructed from the base station is determined as the resource pool allocation information, or a resource pool transferred from another UE It is preferable to include determining any one of arrangement information as the resource pool arrangement information.

  Generating control information based on the determined resource pool arrangement information acquires predetermined ID information corresponding to the determined resource pool arrangement information, and appends the ID information to predetermined bits of the control information. Alternatively, it is preferable to include acquiring predetermined ID information corresponding to the determined resource pool arrangement information, and attaching the ID information to a demodulation reference signal (DMRS) sequence used for transmission of the control information.

  When the resource pool arrangement information is derived from a user equipment (UE) within the coverage of a cell or network, the ID information is an ID associated with a cell ID, while the resource pool arrangement information is out of the coverage of the network. Preferably, the ID information has a predetermined value.

  The resource pool allocation information preferably includes time frequency resource indication information and / or frequency hopping indication information and / or cyclic prefix (CP) length indication information.

  The resource pool arrangement information includes control resource pool arrangement information for control information and data resource pool arrangement information for data information, and the frequency hopping instruction information is frequency hopping for control information transmission in the control resource pool arrangement information. Time frequency resource indication information for control information transmission in the control resource pool arrangement information, the time frequency resource indication information including instruction information and frequency hopping indication information for data information transmission in the data resource pool arrangement information; The CP resource indication information includes data on time frequency resource indication information for data information transmission in the data resource pool arrangement information, and CP length indication information on CP resource indication information for control information transmission in the control resource pool arrangement information; Information Preferably includes a CP length instruction information that data information for transmission.

  In a third aspect, embodiments of the present invention provide a user equipment (UE) for D2D communication. The user equipment includes detection means for detecting control information transmitted from the transmitting side using each resource pool arrangement information stored locally, and resource pool arrangement information used on the transmitting side. The determining means for determining based on the control information detected by the detecting means, and the resource pool arrangement information determined by the determining means and the data information of the transmitting side are based on the control information detected by the detecting means And receiving means for receiving.

  Further, specifically, the determination means acquires ID information attached to a designated bit of the control information, and determines resource pool arrangement information corresponding to the ID information as resource pool arrangement information used on the transmission side. Or acquires ID information attached to a demodulation reference signal (DMRS) sequence used for transmission of the control information, and resource pool arrangement information used on the transmitting side for resource pool arrangement information corresponding to the ID information The resource pool arrangement information corresponding to the position of the transmission resource is determined as information or the position of the transmission resource of the control information is acquired, and the correspondence between the position of the predetermined transmission resource and the resource pool arrangement information is determined. The resource pool allocation information to be used on the transmission side is determined.

  When the resource pool arrangement information is derived from a user equipment (UE) within the coverage of a cell or network, the ID information is an ID associated with a cell ID, while the resource pool arrangement information is out of the coverage of the network. Preferably, the ID information has a predetermined value.

  The resource pool allocation information stored locally is classified according to the origin, and is of resource pool allocation information allocated from the base station, resource pool allocation information instructed from the base station, and resource pool allocation information instructed from other UEs. It is preferred to include any one or more of them.

  The resource pool allocation information preferably includes time frequency resource indication information and / or frequency hopping indication information and / or cyclic prefix (CP) length indication information.

  Further, the resource pool arrangement information includes control resource pool arrangement information for control information and data resource pool arrangement information for data information, and the frequency hopping instruction information is for transmission of control information in the control resource pool arrangement information. Frequency hopping indication information and frequency hopping indication information for data information transmission in the data resource pool arrangement information, wherein the time frequency resource indication information is time frequency resource indication information for control information transmission in the control resource pool arrangement information And CP frequency indication information for transmitting control information in the control resource pool allocation information, and time length resource indication information for data information transmission in the data resource pool allocation information; Pool arrangement information Preferably includes a CP length indication information for transmitting data information in.

  In a fourth aspect, embodiments of the present invention provide a user equipment (UE) for D2D communication. The user equipment is configured to generate control information based on the determining unit configured to determine one resource pool allocation information from at least one resource pool allocation information, and the resource pool allocation information determined by the determining unit. And transmission means for transmitting the control information generated by the generation means based on the resource pool arrangement information determined by the determination means, and transmitting data information in accordance with an instruction of the control information.

  The at least one resource pool allocation information is classified according to the origin, and is among resource pool allocation information allocated in advance, resource pool allocation information instructed from a base station, and resource pool allocation information instructed from another UE. It is preferred to include any one or more.

  Specifically, when the UE is located outside the coverage of the network, the determination means determines the resource pool placement information arranged in advance as the resource pool placement information, and the UE is located within the coverage of the network. The resource pool arrangement information instructed from the base station is determined as the resource pool arrangement information, or any one of resource pool arrangement information transferred from another UE is determined as the resource pool arrangement information Is preferred.

  Specifically, the generation means acquires predetermined ID information corresponding to the determined resource pool arrangement information, attaches the ID information to predetermined bits of the control information, or the determined resource pool arrangement information It is preferable to acquire predetermined ID information corresponding to the ID information and attach the ID information to a demodulation reference signal (DMRS) sequence used to transmit the control information.

  When the resource pool arrangement information is derived from a user equipment (UE) within the coverage of a cell or network, the ID information is an ID associated with a cell ID, while the resource pool arrangement information is out of the coverage of the network. Preferably, the ID information has a predetermined value.

  The resource pool allocation information preferably includes time frequency resource indication information and / or frequency hopping indication information and / or cyclic prefix (CP) length indication information.

  The resource pool arrangement information includes control resource pool arrangement information for control information and data resource pool arrangement information for data information, and the frequency hopping instruction information is frequency hopping for control information transmission in the control resource pool arrangement information. The time-frequency resource indication information includes time-frequency resource indication information of control information transmission in the control resource pool arrangement information, and indication information and frequency hopping indication information for data information transmission in the data resource pool arrangement information; The CP length instruction information includes CP frequency instruction information for control information transmission in the control resource pool arrangement information, and the data resource pool arrangement information in the control resource pool arrangement information. In Preferably includes a CP length indication information for transmitting data information.

  In a fifth aspect, embodiments of the present invention provide a user equipment (UE) for D2D communication. The user equipment includes a processor, a memory connected to the processor via a bus interface, and a program and data used to execute work of the processor, the processor being stored in the memory A detection unit for detecting control information transmitted from a transmitting side using each resource pool arrangement information stored locally when calling a program and data and executing the resource; and a resource used on the transmitting side The determination means for determining pool arrangement information based on the control information detected by the detection means, and the resource pool arrangement information determined by the determination means and the data information of the transmission side are detected by the detection means Implementing reception means for receiving based on the control information.

  In a sixth aspect, embodiments of the present invention provide a user equipment (UE) for D2D communication. The user equipment includes a processor, a memory connected to the processor via a bus interface, and a program and data used to execute work of the processor, the processor being stored in the memory Determining means for determining one resource pool allocation information from at least one resource pool allocation information when calling up a program and data, and control information based on the resource pool allocation information determined by the determining means For transmitting the control information generated by the generation means based on the generation means for generating the information and the resource pool arrangement information determined by the determination means, and transmitting data information in accordance with the instruction of the control information And transmission means.

  In the embodiment of the present invention, based on the above technical means, on the receiving side, the control information transmitted from the transmitting side is detected using each resource pool arrangement information stored locally, and used on the transmitting side. By determining the available resource pool arrangement information based on the detected control information, it is possible to receive data information on the transmitting side based on the determined resource pool arrangement information and control information.

It is a schematic diagram of the conventional cellular communication. It is a schematic diagram of the conventional D2D communication. It is a schematic diagram of the application scenario of the conventional D2D communication. It is a schematic diagram of another application scenario of the conventional D2D communication. It is a schematic diagram of another application scenario of the conventional D2D communication. It is a schematic diagram of another application scenario of the conventional D2D communication. It is a schematic diagram of the data reception process in the Example of this invention. It is a schematic diagram of the data transmission process in the Example of this invention. FIG. 7 is a schematic diagram of an application scenario where a portion of the UEs in an embodiment of the present invention are within the coverage of the network. FIG. 7 is a schematic diagram of an application scenario where UEs in different cell coverage in an embodiment of the present invention; It is a structure schematic diagram of UE in the Example of this invention. It is a structure schematic diagram of another UE in the Example of this invention. It is a structure schematic diagram of another UE in the Example of this invention. It is a structure schematic diagram of another UE in the Example of this invention.

  In order to make the objects, technical means and advantages of the present invention clearer, the present invention will now be described in more detail with reference to the drawings. The examples are part of the embodiments of the present invention and not all. All other embodiments which can be taken by the person skilled in the art without creative work on the basis of embodiments of the present invention fall within the protection scope of the present invention.

  As shown in FIG. 4, in the embodiment of the present invention, the detailed flow of the data reception method by the receiving UE in D2D communication is as follows.

  In step 401, the receiving UE detects control information transmitted from the transmitting side using each piece of resource pool arrangement information stored locally.

  In an embodiment of the present invention, the receiving UE detects the control information in a blind detection method based on the resources available for control information transmission arranged in the resource pool arrangement information. The process is similar to blind detection of physical downlink control channel (PDCCH).

  In one specific embodiment, blind detection of control information is performed on all resources arranged in resource pool arrangement information. In another specific embodiment, control information is detected according to a predefined rule in a part of resources arranged in resource pool arrangement information.

  In addition, the UE updates the locally stored resource pool arrangement information at a set time cycle, and stores the resource pool arrangement information locally if the resource pool arrangement information is not received within the set time cycle. It is preferable to delete the resource pool arrangement information from the resource pool arrangement information list.

  Also, the resource pool arrangement information stored locally on the receiving side UE is, according to origin, resource pool arrangement information arranged in advance, resource pool arrangement information instructed from the base station, and instructed from other UEs. Preferably, it is any one or more of the resource pool arrangement information.

  Specifically, resource pool allocation information instructed to different base stations is different.

  Here, resource pool arrangement information instructed to other UEs is one or more.

  Specifically, when the UE is located outside the coverage of the network, resource pool arrangement information is arranged in advance in the UE. When the UE is located within the coverage of the base station, the UE receives the resource pool allocation information instructed from the base station, or is relayed from another UE and forwarded from the base station Received resource pool allocation information. Regardless of whether the UE is located within the coverage of the network, the UE can receive one or more resource pool configuration information transferred from other UEs. The resource pool allocation information transferred from another UE may be resource pool allocation information instructed to the belonging base station.

  The resource pool allocation information preferably includes time frequency resource indication information and / or frequency hopping indication information and / or cyclic prefix (CP) length indication information. However, it is not limited to them.

  The resource pool arrangement information preferably comprises control resource pool arrangement information for control information and data resource pool arrangement information for data information.

  Here, if the frequency hopping scheme used for control information transmission is different from the frequency hopping scheme used for data information transmission, the frequency hopping indication information may be frequency hopping indication information for control information transmission and data hops for data information transmission. It includes frequency hopping indication information. Frequency hopping indication information for control information transmission is located in control resource pool allocation information, and frequency hopping indication information for data information transmission is located in data resource pool allocation information. If the frequency hopping scheme used for control information transmission is the same as the frequency hopping scheme used for data information transmission, frequency hopping indication information for control information transmission and frequency hopping indication information for data information transmission are independent. There is no need to instruct.

  If the time-frequency resource used for control information transmission and the time-frequency resource used for data information transmission differ for the same reason, the time-frequency resource indication information is the time frequency for control information transmission in the control resource pool arrangement information. It includes resource indication information and time frequency resource indication information for data information transmission in the data resource pool arrangement information. If the CP length used for control information transmission is different from the CP length used for data information transmission, the CP length indication information is CP length indication information for control information transmission in the control resource pool arrangement information, and the data It includes CP length indication information for data information transmission in resource pool arrangement information.

  Here, the time frequency resource indication information may include indication information of D2D transmission subframes and / or indication information of frequency resource location, but is not limited thereto.

  In step 402, the receiving UE determines resource pool arrangement information used on the transmitting side based on the detected control information.

  In order for the UE to determine resource pool allocation information used on the transmitting side based on the detected control information, it is preferable that there are a plurality of methods listed below. However, it is not limited to them.

Method 1
The ID information attached to the designated bit of the detected control information is acquired, and resource pool arrangement information corresponding to the ID information is decided as resource pool arrangement information used on the transmitting side.

Method 2
The ID information attached to the demodulation reference signal (DMRS) sequence used for transmission of the detected control information is acquired, and resource pool arrangement information corresponding to the ID information is determined as resource pool arrangement information used on the transmitting side. .

Method 3
The transmission resource position of the detected control information is acquired, and the resource pool arrangement information corresponding to the position of the transmission resource is used on the transmission side based on the correspondence between the predetermined transmission resource position and the resource pool arrangement information. Confirm as resource pool placement information.

  Specifically, in method 3, the retransmission mode of the detected control information is acquired, and based on the correspondence between the predetermined retransmission mode and the resource pool allocation information, resource pool allocation information corresponding to the retransmission mode is It may be determined as resource pool allocation information used on the transmitting side.

  In the methods 1 and 2, when the resource pool arrangement information is derived from the UE within the coverage of the cell or network, the ID information is an ID associated with the cell ID, and the resource pool arrangement information is outside the coverage of the network. If it originates from UE, it is preferable that ID information is a predetermined value.

  Here, the ID associated with the cell ID may be the cell ID as it is, or may be ID information calculated from the cell ID according to a predetermined rule.

  In step 403, the receiving UE receives the data information of the transmitting side based on the determined resource pool arrangement information and the detected control information.

  The receiving UE determines the resource occupied by the data information on the transmitting side based on the determined resource pool arrangement information, and receives the data information on the transmitting side according to the instruction of the control information on the determined resource.

  In this embodiment, the receiving side UE detects control information transmitted from the transmitting side using each resource pool arrangement information stored locally, and detects resource pool arrangement information used on the transmitting side. By determining based on the control information, it is possible to receive data information on the transmitting side based on the determined resource pool arrangement information and the detected control information.

  Based on the same inventive concept, as shown in FIG. 5, the detailed flow of the data transmission method by the transmitting UE in D2D communication according to an embodiment of the present invention is as follows.

  In step 501, the UE determines one resource pool placement information from at least one resource pool placement information.

  The at least one resource pool allocation information is, according to origin, any of resource pool allocation information allocated in advance, resource pool allocation information instructed from the base station, and resource pool allocation information instructed from another UE. It is preferred to include one or more.

  When the UE is located outside the coverage of the network, the resource pool placement information arranged in advance is determined as the resource pool placement information, and when the UE is located within the coverage of the network, the resource pool placement information instructed from the base station Is preferably determined as resource pool arrangement information, or any one of resource pool arrangement information transferred from another UE is preferably determined as resource pool arrangement information.

  Specifically, resource pool allocation information instructed from different base stations is different. Correspondingly, resource pool arrangement information relayed from UEs in the coverage of different base stations and arranged in the base stations covering the UEs is different.

  In addition, any one resource pool allocation information preferably includes time frequency resource indication information and / or frequency hopping indication information and / or cyclic prefix (CP) length indication information. However, it is not limited to them.

  The resource pool allocation information includes control resource pool allocation information for control information and data resource pool allocation information for data information, and a frequency hopping method used for control information transmission and a frequency hopping method used for data information transmission The frequency hopping indication information includes frequency hopping indication information for control information transmission and frequency hopping indication information for data information transmission, and the frequency hopping indication information for control information transmission is the control resource pool allocation information. The frequency hopping indication information for data information transmission is located in the data resource pool arrangement information, and if the frequency hopping scheme used for control information transmission and the frequency hopping scheme used for data information transmission are the same, Frequency hopping indication information for control information transmission It is preferable not necessary to indicate the frequency hopping indication information for transmitting data information alone.

  If the time-frequency resource used for control information transmission and the time-frequency resource used for data information transmission differ for the same reason, the time-frequency resource indication information is the time frequency for control information transmission in the control resource pool arrangement information. It includes resource indication information and time frequency resource indication information for data information transmission in the data resource pool arrangement information. If the CP length used for control information transmission is different from the CP length used for data information transmission, the CP length indication information is CP length indication information for control information transmission in the control resource pool arrangement information, and the data It includes CP length indication information for data information transmission in resource pool arrangement information.

  Here, the time frequency resource indication information may include indication information of D2D transmission subframes and / or indication information of frequency resource location, but is not limited thereto.

  In step 502, the UE generates control information based on the determined resource pool allocation information.

  The UE acquires predetermined ID information corresponding to the determined resource pool allocation information, attaches the ID information to predetermined bits of the control information, or acquires predetermined ID information corresponding to the determined resource pool allocation information Preferably, the ID information is attached to a demodulation reference signal (DMRS) sequence used for transmission of control information.

  Here, if the determined resource pool arrangement information is derived from the UE within the coverage of the cell or network, the ID information is an ID associated with the cell ID, while the determined resource pool arrangement information is out of the coverage of the network. ID information is a predetermined value.

  Here, the ID associated with the cell ID may be the cell ID as it is, or may be ID information calculated from the cell ID according to a predetermined rule.

  In step 503, the UE transmits control information based on the determined resource pool arrangement information, and transmits data information in accordance with the instruction of the control information.

  Also, the UE transmits the control information based on the position of the transmission resource arranged in the determined resource pool arrangement information, so that the receiving side UE is based on the position of the transmission resource of the control information, and the basis of the control information. It is preferable that the resource pool arrangement information to be can be determined implicitly.

  Specifically, the UE transmits control information on the basis of the retransmission mode arranged in the determined resource pool allocation information, and the receiving side UE is based on the retransmission mode on the control information. Resource pool allocation information to be

  Here, the UE transmits data information in accordance with the instruction of the control information, in a resource occupied by data information arranged in the determined resource pool arrangement information.

  In this embodiment, the UE determines resource pool allocation information, generates control information based on the determined resource pool allocation information, transmits control information based on the determined resource pool allocation information, and determines By transmitting data information based on the instruction of resource pool arrangement information and control information, the receiving UE determines resource pool arrangement information based on the control information, and data information based on the determined resource pool arrangement information. Can be received.

  Hereinafter, the process of data transmission and data reception in D2D communication of the present invention will be described in detail according to three specific embodiments.

  In the first embodiment, FIG. 6 shows an application scenario where some UEs are within the coverage of the network, and it is assumed that subframe information for D2D transmission is arranged in resource pool arrangement information. Here, UE1 within the coverage of the base station transfers resource pool allocation information from the base station. UE2 in the coverage of a base station transmits control information and data information according to the resource pool arrangement | positioning information from a base station. The UE 3 outside the coverage area of the base station transmits control information and data information in accordance with resource pool arrangement information arranged in advance. The UE 4 out of the coverage of the base station detects control information according to the resource pool arrangement information arranged in the base station and the resource pool arrangement information arranged in advance, and detects the control information transmitted from the UE 2. The data information transmitted from the UE 2 is received based on the resource pool allocation information (resource pool allocation information allocated to the base station) instructed by the control information. Moreover, UE 4 outside the coverage of the base station detects control information according to the resource pool arrangement information arranged in the base station and the resource pool arrangement information arranged in advance, and detects the control information transmitted from UE 3. The data information transmitted from the UE 3 is received based on the resource pool allocation information (resource pool allocation information allocated in advance) instructed by the control information.

In the second embodiment, FIG. 6 shows an application scenario in which some UEs are within the coverage of the network, and the frequency hopping scheme of the UEs within the coverage of the base station is arranged with resource allocation information, The frequency hopping scheme of the UE outside the coverage of the base station is predefined by the resource allocation information. UEs within the coverage of the base station may be arranged to adopt the frequency hopping scheme of the physical uplink control channel (PUCCH), and are arranged to adopt the frequency hopping scheme of the physical uplink shared channel (PUSCH) May be Here, in the PUSCH frequency hopping scheme, it is necessary to further allocate subband sizes.
Specifically, UE1 within the coverage of the base station transfers frequency hopping constellation information of the base station. The UE 2 within the coverage of the base station transmits control information and data information in accordance with the frequency hopping arrangement information of the base station. The UE 3 outside the coverage of the base station transmits control information and data information in accordance with the prearranged frequency hopping arrangement information. When UE 4 out of the coverage of the base station detects control information according to both the frequency hopping arrangement information of the base station and the frequency hopping arrangement information arranged in advance, and detects the control information of UE 2, it is instructed by the control information of UE 2 The data information transmitted from the UE 2 is received based on the frequency hopping allocation information (frequency hopping allocation information of the base station). Moreover, when the UE 4 out of the coverage of the base station detects the control information according to both the frequency hopping arrangement information of the base station and the frequency hopping arrangement information arranged in advance, and detects the control information of UE 3, the control information of the UE 3 is The data information transmitted from UE3 is received based on the instructed frequency hopping arrangement information (previously arranged frequency hopping arrangement information).

  In the third embodiment, FIG. 7 shows an application scenario in which the UE is within the coverage of different cells. Here, UE1 within the coverage of the base station eNB1 transfers resource pool arrangement information 1 of the eNB1. The UE 2 within the coverage of the base station eNB 1 transmits control information and data information according to the resource pool configuration information 1 of the eNB 1. UE3 in the coverage of base station eNB2 transmits control information and data information according to resource pool arrangement information 2 of eNB2. The UE 4 within the coverage of the base station eNB 2 acquires the resource pool arrangement information 1 relayed by the UE 1 and the resource pool arrangement information 2 transmitted from the eNB 2. Here, the process of receiving control information and data information is as follows. When UE 4 detects control information according to resource pool arrangement information 1 and resource pool arrangement information 2 and detects control information transmitted from UE 2, UE 4 detects the control information from UE 2 based on resource pool arrangement information 1 indicated by the control information. Receive sent data information. Also, when the UE 4 detects control information according to the resource pool arrangement information 1 and the resource pool arrangement information 2 and detects the control information transmitted from the UE 3, the UE 4 detects the control information based on the resource pool arrangement information 2 indicated by the control information. It receives data information transmitted from UE3.

  Based on the same inventive concept, embodiments of the present invention provide a UE for D2D communication. For the specific implementation of the UE, reference is made to the above description of the receiving UE and no description of duplication is given. As shown in FIG. 8, the UE mainly detects the control information transmitted from the transmitting side using the resource pool arrangement information stored locally, and the transmitting means, and the transmitting side. Determining means 802 for determining resource pool arrangement information used in step S based on the control information detected by the detecting means; resource pool arrangement information determined by the determining means; data information of the transmitting side; And receiving means 803 for receiving based on the control information detected by the detecting means.

  Specifically, the determining unit 802 acquires ID information incidental to a designated bit of the control information, and determines resource pool arrangement information corresponding to the ID information as resource pool arrangement information used on the transmission side. Alternatively, ID information attached to a demodulation reference signal (DMRS) sequence used for transmission of the control information is acquired, and resource pool arrangement information corresponding to the ID information is used as resource pool arrangement information used on the transmitting side. It is preferable to confirm.

  If the resource pool placement information is from a UE within the coverage of a cell or network, the ID information is an ID associated with the cell ID, while if the resource pool placement information is from a UE outside the coverage of the network, the ID The information is preferably a predetermined value.

  Here, the ID associated with the cell ID may be the cell ID as it is, or may be ID information calculated from the cell ID according to a predetermined rule.

  The resource pool arrangement information stored locally is, by origin, resource pool arrangement information arranged in advance, resource pool arrangement information instructed from the base station, and resource pool arrangement information instructed from other UEs. It is preferable to include any one or more of However, it is not limited to them.

  Here, the resource pool allocation information may include, but is not limited to, time frequency resource indication information and / or frequency hopping indication information and / or cyclic prefix (CP) length indication information.

  The resource pool allocation information is composed of control resource pool allocation information for control information and data resource pool allocation information for data information, and a frequency hopping method used for control information transmission and frequency hopping used for data information transmission If the scheme is different, frequency hopping indication information includes frequency hopping indication information for control information transmission and frequency hopping indication information for data information transmission, and frequency hopping indication information for control information transmission includes control resource pool allocation. The frequency hopping indication information for data information transmission is located in the information, and the frequency hopping scheme used for control information transmission and the frequency hopping scheme used for data information transmission are located in the data resource pool allocation information. And frequency hopping fingers for control information transmission And information, it is preferable it is not necessary to instruct alone frequency hopping indication information for transmitting data information.

  If the time-frequency resource used for control information transmission and the time-frequency resource used for data information transmission differ for the same reason, the time-frequency resource indication information is the time frequency for control information transmission in the control resource pool arrangement information. It includes resource indication information and time frequency resource indication information for data information transmission in the data resource pool arrangement information. If the CP length used for control information transmission is different from the CP length used for data information transmission, the CP length indication information is CP length indication information for control information transmission in the control resource pool arrangement information, and the data It includes CP length indication information for data information transmission in resource pool arrangement information.

  Based on the same inventive concept, embodiments of the present invention provide other UEs. For the specific implementation of the UE, reference is made to the above description of the receiving UE and no description of duplication is given. As shown in FIG. 9, the UE mainly detects control information transmitted from the transmitting side using each resource pool arrangement information stored locally, and resource pool allocation used on the transmitting side. A processor 901 for determining information based on the detected control information, and reception for receiving data information of the transmitting side based on the resource pool arrangement information determined by the processor 901 and the control information And a machine 902.

  Further, specifically, the processor 901 acquires ID information incidental to a designated bit of the control information, and determines resource pool arrangement information corresponding to the ID information as resource pool arrangement information used on the transmission side. Alternatively, it acquires ID information attached to a demodulation reference signal (DMRS) sequence used for transmission of the control information, and resource pool arrangement information used on the transmitting side for resource pool arrangement information corresponding to the ID information. It is preferable to determine as

  If the resource pool placement information is from a UE within the coverage of a cell or network, the ID information is an ID associated with the cell ID, while if the resource pool placement information is from a UE outside the coverage of the network, the ID The information is preferably a predetermined value.

  Here, the ID associated with the cell ID may be the cell ID as it is, or may be ID information calculated from the cell ID according to a predetermined rule.

  The resource pool arrangement information stored locally is, by origin, resource pool arrangement information arranged in advance, resource pool arrangement information instructed from the base station, and resource pool arrangement information instructed from other UEs. It is preferable to include any one or more of

  The resource pool allocation information preferably includes time frequency resource indication information and / or frequency hopping indication information and / or cyclic prefix (CP) length indication information.

  The resource pool allocation information includes control resource pool allocation information for control information and data resource pool allocation information for data information, and a frequency hopping method used for control information transmission and a frequency hopping method used for data information transmission And the frequency hopping indication information includes control information transmission frequency hopping indication information and data information transmission frequency hopping indication information, and the control information transmission frequency hopping indication information includes control resource pool allocation information. The frequency hopping indication information for data information transmission is located in the data resource pool allocation information, and the frequency hopping scheme used for control information transmission and the frequency hopping scheme used for data information transmission are the same. , Frequency hopping instructions for control information transmission And distribution, it is preferable it is not necessary to indicate the frequency hopping indication information for transmitting data information alone.

  If the time-frequency resource used for control information transmission and the time-frequency resource used for data information transmission differ for the same reason, the time-frequency resource indication information is the time frequency for control information transmission in the control resource pool arrangement information. It includes resource indication information and time frequency resource indication information for data information transmission in the data resource pool arrangement information. If the CP length used for control information transmission is different from the CP length used for data information transmission, the CP length indication information is CP length indication information for control information transmission in the control resource pool arrangement information, and the data It includes CP length indication information for data information transmission in resource pool arrangement information.

  Based on the same inventive concept, embodiments of the present invention provide a UE for D2D communication. For the specific implementation of the UE, reference is made to the above description on the sender side and no duplicate description is given. As shown in FIG. 10, the UE mainly determines determining means 1001 for determining one resource pool allocation information from at least one resource pool allocation information, and the resource pool allocation information determined by the determining means 1001. And transmitting the control information generated by the generation unit 1002 based on the resource pool arrangement information determined by the determination unit 1001, and instructing the control information And transmission means 1003 for transmitting data information.

  The at least one resource pool allocation information is, by source, any of resource pool allocation information allocated in advance, resource pool allocation information instructed from a base station, and resource pool allocation information instructed from another UE. It is preferred to include one or more.

  Specifically, when the UE is located outside the coverage of the network, the determination unit 1001 determines the resource pool allocation information, which is arranged in advance, as the resource pool allocation information, but the UE is within the coverage of the network. If located, the resource pool arrangement information instructed from the base station is determined as the resource pool arrangement information, or any one of resource pool arrangement information transferred from another UE is used as the resource pool arrangement information It is preferable to confirm.

  Specifically, the generation unit 1002 acquires predetermined ID information corresponding to the determined resource pool arrangement information, attaches the ID information to predetermined bits of the control information, or the determined resource pool arrangement Preferably, predetermined ID information corresponding to information is acquired, and the ID information is attached to a demodulation reference signal (DMRS) sequence used for transmission of the control information.

  When the determined resource pool arrangement information is derived from the UE within the coverage of the cell or network, the ID information is an ID associated with the cell ID, while the determined resource pool arrangement information is from the UE outside the coverage of the network Once derived, the ID information is preferably a predetermined value.

  Here, the ID associated with the cell ID may be the cell ID as it is, or may be ID information calculated from the cell ID according to a predetermined rule.

  Preferably, the resource pool allocation information includes time frequency resource indication information and / or frequency hopping indication information and / or cyclic prefix (CP) length indication information.

  The resource pool allocation information includes control resource pool allocation information for control information and data resource pool allocation information for data information, and a frequency hopping method used for control information transmission and a frequency hopping method used for data information transmission And the frequency hopping indication information includes control information transmission frequency hopping indication information and data information transmission frequency hopping indication information, and the control information transmission frequency hopping indication information includes control resource pool allocation information. The frequency hopping indication information for data information transmission is located in the data resource pool allocation information, and the frequency hopping scheme used for control information transmission and the frequency hopping scheme used for data information transmission are the same. , Frequency hopping instructions for control information transmission And distribution, it is preferable it is not necessary to indicate the frequency hopping indication information for transmitting data information alone.

  If the time-frequency resource used for control information transmission and the time-frequency resource used for data information transmission differ for the same reason, the time-frequency resource indication information is the time frequency for control information transmission in the control resource pool arrangement information. It includes resource indication information and time frequency resource indication information for data information transmission in the data resource pool arrangement information. If the CP length used for control information transmission is different from the CP length used for data information transmission, the CP length indication information is CP length indication information for control information transmission in the control resource pool arrangement information, and the data It includes CP length indication information for data information transmission in resource pool arrangement information.

  Based on the same inventive concept, embodiments of the present invention provide a UE for D2D communication. For the specific implementation of the UE, reference is made to the above description on the sender side and no duplicate description is given. As shown in FIG. 11, the UE mainly determines one resource pool arrangement information from at least one resource pool arrangement information, and generates a control information based on the determined resource pool arrangement information. The transmitter 1102 transmits the control information based on the determined resource pool arrangement information 1101 and transmits data information according to an instruction of the control information.

  The at least one resource pool allocation information is, by source, any of resource pool allocation information allocated in advance, resource pool allocation information instructed from a base station, and resource pool allocation information instructed from another UE. It is preferred to include one or more.

  Specifically, when the UE is located outside the coverage of the network, the processor 1101 determines pre-arranged resource pool placement information as the resource pool placement information, and when the UE is located within the coverage of the network, The resource pool arrangement information instructed from the base station is determined as the resource pool arrangement information, or any one of the resource pool arrangement information transferred from another UE is determined as the resource pool arrangement information. Is preferred.

  The processor acquires predetermined ID information corresponding to the determined resource pool arrangement information, attaches the ID information to predetermined bits of the control information, or a predetermined ID corresponding to the determined resource pool arrangement information It is preferable to acquire information and attach the ID information to a demodulation reference signal (DMRS) sequence used to transmit the control information.

  When the determined resource pool arrangement information is derived from the UE within the coverage of the cell or network, the ID information is an ID associated with the cell ID, while the determined resource pool arrangement information is from the UE outside the coverage of the network Once derived, the ID information is preferably a predetermined value.

  Here, the ID associated with the cell ID may be the cell ID as it is, or may be ID information calculated from the cell ID according to a predetermined rule.

  Also, the resource pool allocation information includes time frequency resource indication information and / or frequency hopping indication information and / or cyclic prefix (CP) length indication information.

  The resource pool allocation information includes control resource pool allocation information for control information and data resource pool allocation information for data information, and a frequency hopping method used for control information transmission and a frequency hopping method used for data information transmission are available. If different, frequency hopping indication information includes frequency hopping indication information for control information transmission and frequency hopping indication information for data information transmission, and frequency hopping indication information for control information transmission is located in control resource pool allocation information. The frequency hopping indication information for data information transmission is located in the data resource pool allocation information, and control is performed if the frequency hopping method used for control information transmission and the frequency hopping method used for data information transmission are the same. Frequency hopping indication information for information transmission It is preferable not necessary to indicate the frequency hopping indication information for transmitting data information alone.

  If the time-frequency resource used for control information transmission and the time-frequency resource used for data information transmission differ for the same reason, the time-frequency resource indication information is the time frequency for control information transmission in the control resource pool arrangement information. It includes resource indication information and time frequency resource indication information for data information transmission in the data resource pool arrangement information. If the CP length used for control information transmission is different from the CP length used for data information transmission, the CP length indication information is CP length indication information for control information transmission in the control resource pool arrangement information, and the data It includes CP length indication information for data information transmission in resource pool arrangement information.

  Those skilled in the art will appreciate that embodiments of the present invention may be provided as a method, system, or computer program product. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Moreover, the present invention is embodied in one or more computer usable storage media (including but not limited to magnetic disk memory, CD-ROM, optical memory, etc.) including computer usable program code. It may take the form of a computer program product.

  The invention has been described with reference to flow diagrams and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the invention. It should be understood that each flow and / or block in the flow diagram and / or block diagram, and a combination of the flow and / or block in the flow diagram and / or block diagram may be implemented by computer program command. These computer program commands are provided to a processor of a general computer, a dedicated computer, a built-in processor or other programmable data processing device to form one device, and executed on a processor of the computer or other programmable data processing device The instructions to form a device for implementing the functions specified in one or more flows of the flow diagram and / or one or more blocks of the block diagram.

  These computer program commands may be stored in a computer readable memory capable of directing the operation of the computer or other programmable data processing device in a particular manner, the commands stored in the computer readable memory causing the command device to Form a product that includes. The command device implements the functions specified in one or more flows of the flow diagram and / or one or more blocks of the block diagram.

  These computer program commands may be loaded onto a computer or other programmable data processing device, and form a computer implemented process by performing a series of work steps on the computer or other programmable data processing device. And provide steps for implementing the functions specified in one or more flows of the flow diagram and / or one or more blocks of the block diagram according to a command executed on the computer or other programmable data processing device Do.

  Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention are included in the claims of the present invention and the technical scope thereof, the present invention is intended to include these variations and modifications.

Claims (9)

The receiving user equipment detects the control information transmitted from the transmitting side by using a blind detection method using each piece of resource pool arrangement information stored locally;
The receiving user equipment determines resource pool allocation information used on the transmitting side based on the detected control information;
Receiving the transmitting side data information based on the determined resource pool arrangement information and the control information.
The resource pool allocation information stored locally is classified according to the origin, and resource pool allocation information allocated in advance, resource pool allocation information instructed from the base station, and user equipment is within or out of the coverage of the network in some cases, viewing contains any one or more of the resource pool allocation information instructed from the base station are those with a with that transferred from another user equipment,
It is possible that the receiving user equipment decides resource pool arrangement information used on the transmitting side based on the detected control information.
Acquiring ID information incidental to a designated bit of the control information, and determining resource pool arrangement information corresponding to the ID information as resource pool arrangement information used on the transmission side;
Or
Acquiring ID information attached to a demodulation reference signal sequence used for transmission of the control information, and determining resource pool arrangement information corresponding to the ID information as resource pool arrangement information used on the transmitting side;
Or
The transmission resource side acquires the position of the transmission resource of the control information, and uses the resource pool arrangement information corresponding to the position of the transmission resource based on the correspondence between the predetermined position of the transmission resource and the resource pool arrangement information. A data reception method in D2D communication, characterized by including determination as resource pool arrangement information . The data reception method in D2D communication according to claim 1 , wherein the resource pool arrangement information includes time frequency resource indication information and / or frequency hopping indication information and / or cyclic prefix length indication information. The resource pool arrangement information comprises control resource pool arrangement information for control information and data resource pool arrangement information for data information,
The frequency hopping indication information includes frequency hopping indication information for control information transmission in the control resource pool arrangement information and frequency hopping indication information for data information transmission in the data resource pool arrangement information.
The time frequency resource indication information includes time frequency resource indication information for control information transmission in the control resource pool arrangement information, and time frequency resource indication information for data information transmission in the data resource pool arrangement information.
The cyclic prefix length indication information includes cyclic prefix length indication information for control information transmission in the control resource pool arrangement information, and cyclic prefix length indication information for data information transmission in the data resource pool arrangement information. The data reception method in D2D communication according to claim 2 , characterized in that: The transmitting user equipment determines one resource pool arrangement information from at least one resource pool arrangement information;
Generation of control information on the basis of the determined resource pool arrangement information by the transmitting user equipment ;
Transmitting the control information on the basis of the determined resource pool arrangement information, and transmitting data information in accordance with the instruction of the control information, based on the determined resource pool arrangement information.
The at least one resource pool allocation information is classified according to the origin, and the resource pool allocation information allocated in advance, the resource pool allocation information instructed from the base station, and the user equipment is within or out of the coverage of the network If, viewed contains any one or more of the resource pool allocation information instructed from the base station are those with a with that transferred from another user equipment,
The transmitting user equipment may generate control information based on the determined resource pool allocation information,
Acquiring predetermined ID information corresponding to the determined resource pool arrangement information, and attaching the ID information to predetermined bits of the control information;
Or
Data in D2D communication characterized in that predetermined ID information corresponding to the determined resource pool arrangement information is acquired, and the ID information is attached to a demodulation reference signal sequence used for transmission of the control information. How to send It is possible for the transmitting user equipment to determine one resource pool arrangement information from at least one resource pool arrangement information:
When the transmission side user equipment is located outside the coverage of the network, the resource pool arrangement information arranged in advance is decided as the resource pool arrangement information,
If the transmitting user equipment is located within the coverage of the network, resource pool allocation information instructed from the base station is determined as the resource pool allocation information, or among resource pool allocation information transferred from other user equipment The data transmission method in D2D communication according to claim 4 , further comprising determining any one of the resource pool allocation information as the resource pool allocation information. The resource pool configuration information, as claimed in any one of claims 4-5, characterized in that it comprises a time-frequency resource indication information, and / or frequency hopping indication information, and / or cyclic prefix length indication information Data transmission method in D2D communication. Detection means for detecting control information transmitted from the transmitting side by a blind detection method using each resource pool arrangement information stored locally;
A determination unit configured to determine resource pool layout information used on the transmission side based on the control information detected by the detection unit;
Receiving means for receiving the transmission side data information based on the resource pool arrangement information determined by the determining means and the control information detected by the detecting means;
The resource pool allocation information stored locally is classified according to the origin, and resource pool allocation information allocated in advance, resource pool allocation information instructed from the base station, and user equipment is within or out of the coverage of the network in some cases, viewing contains any one or more of the resource pool allocation information instructed from the base station are those with a with that transferred from another user equipment,
The determining means is
Acquiring ID information incidental to a designated bit of the control information, and determining resource pool arrangement information corresponding to the ID information as resource pool arrangement information used on the transmission side;
Or
Acquiring ID information attached to a demodulation reference signal sequence used for transmission of the control information, and determining resource pool arrangement information corresponding to the ID information as resource pool arrangement information used on the transmitting side;
Or
The transmission resource side acquires the position of the transmission resource of the control information, and uses the resource pool arrangement information corresponding to the position of the transmission resource based on the correspondence between the predetermined position of the transmission resource and the resource pool arrangement information. A user device for D2D communication characterized by being determined as resource pool arrangement information . The user equipment for D2D communication according to claim 7 , wherein the resource pool arrangement information includes time frequency resource indication information and / or frequency hopping indication information and / or cyclic prefix length indication information. Determining means for determining one resource pool arrangement information from at least one resource pool arrangement information;
Generation means for generating control information based on the resource pool allocation information determined by the determination means;
Transmitting means for transmitting the control information generated by the generation means based on the resource pool allocation information determined by the determination means, and transmitting data information in accordance with an instruction of the control information;
The at least one resource pool allocation information is classified according to the origin, and the resource pool allocation information allocated in advance, the resource pool allocation information instructed from the base station, and the user equipment is within or out of the coverage of the network If, viewed contains any one or more of the resource pool allocation information instructed from the base station are those with a with that transferred from another user equipment,
The generation means is
Acquiring predetermined ID information corresponding to the determined resource pool arrangement information, and attaching the ID information to predetermined bits of the control information;
Or
A user equipment for D2D communication , acquiring predetermined ID information corresponding to the determined resource pool allocation information, and attaching the ID information to a demodulation reference signal sequence used for transmission of the control information .